Machine for turning pullets



(No Model.)

3 Sheets-Sheet 1. A. WOOD. MAGHINB POR TURNING PULLEYS.

Patented June 12, 1894.

me NATIQNAL Lrmoanumm ODMPANYJ wAsmNumN. u, c.

3 Sheets-Sheet 2.

(No Model.)

A. WOOD. MACHINE PON TUNNING PNLLEYS.

No. 521,353. Patented JunelZ, 1894.

THE NA'noNAx. LmmanAPf-ma GOMFANY.

(Nd Model.) a sheets-sheet s.

MACHINE PON TURNING PULLBYS.

No. 521,353. Patented June 12, 1894.

,61,3 H3 VS1 H UNITED STATES PATENT OEEICE.

AURINfWOOD, OF WORCESTER, MASSACHUSETTS, ASSIGNOR, BY MESNE ASSIGNMENTS, TO THE L. W. POND MACHINE COMPANY, OF SAME- PLACE.

MACHINE FOR TURNING PULLEYS.

SPECIFICATION forming part of Letters Patent No. 521,353, dated Iune 12,1894. 2

Application filed October 31, 1891. Serial No. 410,442. (No model.)

To all whom it may concern.-

Be it known that l, AURIN WOOD, a citizen of the United States, residing at Worcester, in the county of Worcester and State of Massachusetts, have invented a new and useful Improvement in Machines for Turning Pulleys, of which the following is a specification, reference being made to the accompanying drawings, forming a part of the same, and representing a machine forborin g pulleys, embodying my invention.

Figure l represents a front view of the machine. Fig. 2 is a top view. Fig. 3 is an end view. Fig. 4 is a central longitudinal sectional view of 4the machine. Fig. 5 is a sectional'view of one of the tool supporting and y feeding mechanisms shown on line X, X, Fig.

2. Fig. 6 is a corresponding sectional view of the opposite tool supporting and feeding mechanism, shown on line Y, Y, Fig. 2. Fig. 7 is a top View of thel pulley support and Fig. 8 is a sectional view of the same on line Z, Z, Fig. 7. Fig. 9 is a detached view of the pulley supporting spindle with a concentric a1'- bor held therein, a portion of said spindle being shown in sectional view.

Similar letters refer to similar parts in the several figures.

Referring to the accompanying drawings A denotes the bed of the machine provided with ways A upon its upperV surface upon which the carriages B, C, are moved length- Wise 'the bed by means of the actuating screws B and C journaled in brackets B2 and C2 and engaging nuts upon the under side of the carriages, one of which is shown at C3 Fig. 4.

Journaled in the center of the bed isa vertical spindle D carrying a bevel gear D engaged by a bevel pinion D2 upon a shaft D3 journaled within the sleeve D4, forming part ofthe frame-work of the machine and carv rying the gear wheel D5 engaged by apinion .D10 and both turning loosely upon a stud D11 heldin a sliding block D12 sliding in ways upon the bracket D13 and engaged by a screw D14 having a crank handle D1G by `which the block D12 is moved along the ways in the bracket D13 so as to vary the distance between the studs D11 and D6 and allow the pinion D9 to beexchanged for pinions of'different sizes by which the speed of the central spindle D is varied relatively to the speed of the belt pulley D10. The spindle D carries upon its upper end a pulley support E in the form of an inverted hollow cone provided With an internal screw thread E by which it is screwed upon the upper end of the spindle D. The cone E is provided with a series of equi-distant concentric holes E3, which receive the shanks E4 of the U-shaped spoke clamps E5 in the upper arm of which are placed the binding screws E6; the spoke clamps E5 can be raised or lowered in the holes E3 and held in position by set screws E7.

Figs..1, 2 and 3 represent a pulley F in position to be turned and Fig. 4 represents the pulley holding mechanism the pulley having been removed. The pulley to be turned is first bored coneentrically with its outer face and placed upon the center arbor F heldconcentrically in the spindle D and fitting the hole bored in the pulley by which the pulley F is held concentric with the rotating spindle D. The spokes F2 of the pulley are brought between the arms of the clamps E5 and held by the clamping screws E5, causing the rotation of the spindle D to be imparted to the pulley F in the direction of the arrow l Fig. 2. The spindle D is provided with center arbors of dilferent sizes to t different sized holes in the pulleys and the speed with which 'the rim of the pulley F, travels is kept approximately the same whatever the diameter of the pulley, by means of a series of change gears carried upon the hub of the driving pulley D10 and interchangeable With the pinion D9 by varying the distance between the studs D1i and D11. Cones E of diderent sizes are provided to receive pulleys of vgreat difference in diameter in order to allow the spokes of the pulley to be engaged by the clamps E5 near the rim of the pulley in order to reduce the vibration of the rimin the pro- TOO placed the adjusting screws G2, G2 and between which is placed a plate G3 provided with ways G1 along which slides a saddle-plate G5 carrying a tool holder G6 in which a cutting tool G7 is held by set-screws G8. A screw G1 journaled in the plate G2' serves to adjust the saddle-plate vertically along the ways G1. The lower end of the screw G1 carries a bevel pinion G10 engaging a bevel-pinion G11 upon a spindle G12 upon which a worin-gear G12 turns loosely and is capable of being connected with the spindle G12 by a clutching mechanism G11 having a spline connection with the spindle G12, allowing the motion of the worm-gear G12 to be communicated to the spindle G12 at will. The plate G3 is provided with a hollow sleeve G15 jonrnaled in the upright post G concentrically with the spindle G12 by which the plate G3 is capable of a slight rocking motion about the axis of the spindle G12 as adjusted by the screws G2. By this means the plate G3 and ways G1 can be fixed in a vertical position parallel with the axis of the spindle D, in which position the cutting tool G7 will be fed across the face of the pulley F turning the saine straight and parallel with the axis of the spindle D. By tipping the plate G2 out of a vertical position the` point of the cutting tool will be fed in a line obliquely to the yaxis of the spindle D. When the desiredinclination of the plate G3 and ways G4 is secured the plate G3 is clamped against the upright post G by the screws G11, G16., The worin-gear G12 is driven by a worm G17 carried by a horizontal shaft G12 which is rotated through the cone pulley G11 having a belt connection with the cone pulleys G20 driven by a chain belt G21 from a sprocket G22 upon the hub of the gear D7. The spindle G12 is also provided with a crank G23 allowing the cutting tool G7 to be fed by hand.

Upon the carriage C is an upright post H provided with the [langes H carrying adjusting screws H2 between which is placed a plate H2 provided with vertical ways H1 along which slides the saddle-plate H5 carrying the upper and lower tool holders H11 and H7. The saddle-plate H5 is fed along the ways H1 by a screw H2 having a bevel gear H engaging a gear H10 upon a spindle H11 havinga crank H12 and a sliding clutch H13 having a spline connection with the spindle H11 and engaging a worm-gearH14 turning on thespindle H11 and driven by a worm H15 on the horizontal shaft The plate H11 carries a stud H111journaled in the upright post H with its axis in alignment with the axis ot the spindle H11; the construction of the toolholding and feeding mechanisms upon the carriage C being substantially the same in their essential features to the similar mechanisms supported upon the carriage B; the plate H2 being adjusted relatively to the axis of the spindle and clamped in position against the upright post H by the tightening screws II17, H17.

Supported in the bracket I, attached to the 1 bed of the machine is a post I carrying the graduated bar 12 capable of rotating about the axis of the post I' and also of sliding diametrically to the post. One end of the graduated bar l2 carries a roll I2.

The 'bed of the machine is provided with openings J, J communicating with tubes J extending downward to the Vbottom portion of the bed. The openings J, J are situated beneath the points ot' the cutting tools in position to receive the chips which are conduct ed through the tubes J to the floor or a receptacle beneath the bed of the machine. The lower end of the vertical spindle D is reduced in diameter at K and journaled in the bearing K which holds a screw K2 upon which the end of the spindle D rests and which is capable of vertical adjustment in order to support the weight of the spindle D. The supporting legs L, L are hollow and closed upon one side by doorsL to provide suitable receptacles for .the changegears to be used upon the hub of the belt pulley D11 and also for the various sizes of center arbore used in the spindle D.

The operation of the machine isas follows: The pulley to be turned is placed in the position of pulley F, as already described, the

` plates G3 and H2 are placed in proper position to give the requisite taper tothe face of the pulley and the tools G7 and H12 are brought in contact with the center of the face of the `pulley as represented in Fig. 1, and the carriages Band C carried toward the spindle D until the center ofthe face of the pulley is turned the desired size, which is determined by carrying the roll I2 against the turned portion of the pulley and reading the dia|n- 1 eter indicated by the scale upon the graduated bar I2. then connected with their respective wor1ngears, causing the tool G7 to be fed upward The spindles G12 and `H11 are from thecenter of the pulley toward the edge and the tool H1s to be fed downward from the center of the pulley toward the edge, causing the face of the pulley to be turned from the p center upward and downward simultaneousl y and with the corresponding taper. The saddle-plate H5 is provided with two tool holders l IlG and H7, the former placed at or near the upper edge of the saddle-plate H5 and the latter placed at or near the lower edge of the saddle-plate; the object of these tool holders is to furnish supports for cutting tools by j which the edges of the rim of the pulley can be finished. After the face of the pulley has 1 been turned in the manner already described `by the cutting tools G7 and H12, tool H12 is withdrawn and a properly shaped cutting tool H11 is placed in the holder H" and carried against the upper edge ot" the pulley rim; tool H11 is then withdrawn and a corresponding 1tool placed in the holder H7' and brought against the lower edge of the pulley rim.

I am aware that boring mills have been constructed having a bed-plate supporting a IOO llO

' ported'by the side housings and having one, t

rotating spindle upon which the box is carried; side housings and a transverse rail supor more, saddles carrying cutting tools, capable of an adjustment at an angle to the axis of the work supporting spindle and provided with feeding mechanism by which the tools are fed across the vvertical surface of the work and I do not, herein claim such. I do away with the Vertical side housings, and with the transverse -rail above the work, thereby allowing the pulley to be turned, to be lifted vertically upon and od from the 4machine by an over head crane or other means, the transverse adjustment of the cutting tools, to accommodate pulleys of different diameters, being accomplished by means of ways formed in the bed of the machine; I also carry the tools in saddles or tool holders, which have a vertical feeding motion along ways formed in plates projecting from carriagesl moving along the transverse way formed in the bed of the machine.

What I claim as my invention, and desire to secure by Letters Patent, is

1. In a pulley turning machine, the combination of a bed, a spindle journaled vertically in said bed, a pulley support carried by said spindle, a horizontal ,way below said pulley support, a carriage capable of sliding on said Way, a post extending vertically from said carriage when said post is parallel with the axis of said pulley support, a way upon one of its vertical sides of said post, and a tool holder capable of sliding on said way in a plane parallel with the axis of said pulley support, substantially as described.

2. In a pulley machine, the combination of `a bed provided with ways extending across thc top of said bed, a spindle journaled in said bed and having a pulley support upon its upper end, a carriage arranged to slide along said Ways, a plate pivotally attached to and extending upward from said carriage and provided withways for a tool holder, a tool holder sliding along the ways upon said pivoted plate, and means by which said pivoted plate can be held at a desired angle to the axis of said spindle, substantiallyas described.

3. In a pulley machine, the combination of a bed, provided with ways extending across the top of said bed, a carriage Varranged to slide on said ways, a rotating pulley support journaled in said bed, a rotating shaft journaledin said carriage, a plate pivoted upon said carriage ooncentrically with said shaft, a tool holder sliding along said pivoted plate, a feed screw journaled on said plate, and engaging said tool holder, said feed screw being operatively connected with said shaft, and means by which said pivoted platel is adjust ably held in relation to said rotating pulley support, substantially as described.

4t. In a pulley turning machine, the combination with abed and a spindle journaled in said bed and carrying a pulley support, of a way on said bed, carriages moving along said Way, rotating feed shafts journaled in said carriages, a driving shaft G18 connected with said feed shafts, by which they are simultaneously driven, plates supported on said carriages and pivoted concentrically with said feed shafts, actuating screws journaled on said plates and operatively connected with said feed shafts, and tool holders capable of sliding on saidrplates in planes parallel With` the axis of said pulley support, substantially as described.

5. In a pulley turning machine, the combination of a bed, a spindle journaled in said bed, tool holders moving along ways by which they are traversed across the face of the pulley to be turned, a rotating feed shaft G18, feed screws actuating said tool holders and clutching mechanisms by which said feed screws are operatively connected with said feed shaft, substantially as described.

6. In a pulley turning machine, the combination of a rotating spindle, by which the pnlley to 'be turned is carried, an arbor held concentrically in said spindle, and a series of pulley clamping devices carried by said spindle and arranged around said arbor and consisting of the U-shaped clamps E5 carrying the tightening screws E6, substantially as described.

'7. In a pulley turning machine, the combination of a rotating spindle, by which the pulley is carried, a tool holder arranged to traverse across the face of the pulley to be turned, a fixed spindle supported by the face of the machine, a sliding graduated gage bar supported by said fixed spindle, whereby the diameter of the pulley is'determined, substantially as described.

8. In a pulley turning machine, the combination of a bed, a spindle journaled in said bed and carrying the pulley to be turned, a driving pulley,intermediate connecting meollanism between said spindle and said driving pulley, a sliding block carrying said driving pulley, by which its position is varied to allow change-gears to be used, and an actuating screw, by which said block is moved,sub stantially as described.

Dated at Worcester, in the county of Worcester and State of Massachusetts, this RUFUs B. FOWLER, W. F. BANCROFT.

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